Merge pull request #88 from ruby/revert-bundler-setup

Revert "Fixes "bundle exec rake", clash with test/unit"

Author: hsbt

Rakefile

@@ -6,7 +6,7 @@ require "rake/clean"
 
 Rake::TestTask.new(:test) do |t|
   t.libs << "test/lib"
-  t.ruby_opts << "-rbundler/setup -rhelper"
+  t.ruby_opts << "-rhelper"
   t.test_files = FileList["test/**/test_*.rb"]
 end